COLUMBIA VAC OPC1050N Bedienungsanleitung Seite 22

5. Fire-extinguishing accessibility
If any hot operations are to be carried out on the cooling equipment or any associated
parts, suitable fire-extinguishing equipment should be available. Dry powder or CO2 fire
extinguisher should be placed adjacent to the charging area.
6. No ignition sources
No persons performing work on cooling systems, which consists of uncovering pipes
containing flammable refrigerant may use any ignition sources in a manner creating a risk
of fire or explosion. All possible sources of ignition, including cigarette smoking, should
be kept at a suitable distance from the place of installation, repair, removal, and disposal,
during which the flammable refrigerant can be released into the environment. Before
starting work, examine the area around the equipment to ensure that there is no fire or
ignition hazard. Place "No smoking" signs.
7. Ventilated area
Make sure that the area is outside or properly ventilated before performing any repair or
maintenance works on the system or hot operations. A certain degree of ventilation should
be maintained during the work-performing period. Ventilation should safely disperse the
released refrigerant, and preferably release it outside into the atmosphere.
8. Cooling equipment inspections
In the event of the replacement of electrical components, they should be appropriate for
the purpose, and compliant with the relevant specifications. The manufacturer's guidelines
for maintenance and servicing must be observed at all times. If any doubts, contact the
technical department of the manufacturer.
The following inspections should be performed concerning the systems using flammable
refrigerants:
- The size of the load is compliant with the room size in which components containing
refrigerant are installed;
- Ventilation units and outlets are working properly, and are not clogged up;
- When using an intermediate cooling circuit, check for the refrigerant;
- The marking of the device is still visible and legible. Markings and signs which are
illegible must be corrected;
- Cooling pipes or components should be installed in a place where there is a low
likelihood of their coming into contact with any substance which can cause corrosion
of components containing refrigerant, unless these components are made of materials
inherently resistant to corrosion, or adequately protected against corrosion.
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